The weather observed at BOSTON, MA (KBOS) at 03:54 PM EDT was: The skies were mostly cloudy. Temperature: 91F ( 33C) Dewpoint: 68F ( 20C) Relative Humidity: 46% Winds from the SW (240 degs) at 17 mph. Pressure: 1011.9 millibars. Altimeter:29.88 inches of mercury. The prevailing visibility was 10 miles.